It’s happened: Trump has announced his nominee to replace Justice Anthony Kennedy on the Supreme Court. On July 9th, Trump nominated Brett Kavanaugh to the Supreme Court and set the stage for a monumental shift in the Court’s makeup. If Trump is successful at getting Kavanaugh confirmed, the Court will work to preserve the Trump agenda for decades to come.

Key issues that affect us all hang in the balance, including reproductive rights, access to health care, LGBTQ rights, environmental protections, and much more. Further, the next Supreme Court justice could rule on cases involving Trump himself, whether resulting from the Mueller investigation or otherwise.

Brett Kavanaugh is one of the most cravenly partisan choices Trump could have made. He has been called the “Forrest Gump of Republican politics” because he always seems to show up in high-profile far-right conspiracy theories and political battles.

Here’s what you need to know about his nomination to the Supreme Court.